JPH07135585A - Video camera - Google Patents

Abstract

PURPOSE:To easily discriminate plural operating states of the video camera depending on the lighting state of a tarry lamp. CONSTITUTION:At least two sets of tarry lamps being an upper side tarry lamp 61 and a lower side tarry lamp 62 lighted in red corresponding to a predetermined operating state such as a recording state, a small tape residual amount, and in the state of on-air or the like are provided to an upper and a lower position in a view finder 21. Thus, various operating states of the video camera is easily discriminated based on the lighting state (blink state and extinguishing state) of the upper and lower tarry lamps 61, 62.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera suitable for application to, for example, a camera-integrated VTR having an electronic viewfinder.

[0002]

2. Description of the Related Art Conventionally, a camera-integrated VTR for business use
Then, in the specific use condition of this camera integrated VTR,
For example, visible means, such as a light emitting diode, which emits red light when recorded on a mounted video cassette tape, is provided in the viewfinder. This visible means is called tally means. Therefore, the light emitting diode and the like are called tally lamps.

FIG. 4 shows the structure within a viewfinder according to the prior art in which a tally lamp is provided.

The viewfinder 1 has an eyecup 2 around its front surface, and a CRT screen 3 is arranged at the center of its front surface. Moreover, one tally lamp 4 is arranged on the upper part of the screen 3.

By the way, when considering the operation and function of the tally lamp 4 in a video camera alone without a VTR, the tally lamp 4 is connected to the VTR when the VTR is externally connected to the video camera alone. Recording state on the mounted tape, so-called recording tally (R
It emits red light to indicate EC TALLY). Alternatively, instead of connecting the VTR to the outside, a red light is emitted to indicate a so-called CALL TALLY, which represents an on-air state when the CCU (camera control unit) is externally connected.

As described above, when the tally lamp 4 is used as an operating lamp for a video camera without a built-in VTR, the recording tally and the coal tally are used independently of each other. There was no

[0007]

However, like a camera-integrated VTR, the use of an internal VTR and an external VTR
If the video camera according to the related art provided with only one tally lamp 4 can be used as the operating state, the current state of use for the photographer who is the user Therefore, it is difficult to determine whether the tally lamp 4 is turned on.

The present invention has been made in view of the above problems, and provides a video camera capable of easily discriminating a plurality of operating states of the video camera by the lighting state of the visible means. The purpose is to

The present invention has been made in view of the above problems, and provides a video camera capable of surely determining the operating state of the video camera by the lighting state of the visible means. The purpose is to

[0010]

According to the present invention, for example, as shown in FIGS. 1 and 2, at least two light-emitting devices which emit red light at a predetermined position in a viewfinder 21 corresponding to a predetermined operation state. The visible means 61 and 62 are provided.

Further, according to the present invention, the meanings of at least two visible means 61, 62 can be changed.

Further, according to the present invention, the meanings of the respective at least two visible means 61 and 62 are made the same.

Furthermore, according to the present invention, the at least two visible means are tally lamps.

[0014]

According to the present invention, at least two visible means 61, 62 which emit red light corresponding to a predetermined operating state are provided at predetermined positions in the viewfinder 21. Therefore, various operating states of the video camera can be easily discriminated by the lighting state (blinking state, extinguished state) of at least two visible means 61, 62.

Further, according to the present invention, the meanings of at least two visible means 61 and 62 can be changed. Therefore, for example, the light emitting position can be changed in accordance with the priority order of the operating states and the like.

Further, according to the present invention, the meanings of the at least two visible means 61 and 62 are the same. Therefore, the operating state determined by the visible means 61, 62 is limited, but the visible means 61, 6
It is possible to significantly reduce the probability of missing the light emission of No. 2.
In other words, the operating state can be reliably determined.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the drawings referred to below,
Components corresponding to those shown in FIG. 4 are designated by the same reference numerals.

FIG. 1 shows the structure of a camera-integrated VTR to which the video camera according to this embodiment is applied.

In FIG. 1, light L having image information for a subject is supplied to an image pickup processing circuit 12 through a lens 11.

The image pickup processing circuit 12 is a CCD having a three-plate structure.
It is composed of an image pickup device such as (charge coupled device), an amplifier and an A / D converter, and outputs color signals R (red), G (green) and B (blue) of the three primary colors to the image signal processing circuit 13. Supply.

The image signal processing circuit 13 basically has a process circuit section, a matrix section and an encoder section. After performing the contour correction processing, the γ correction processing, and the like in the process circuit unit, the luminance signal Y and the color difference signal R− in the matrix unit.
Y and B-Y are created, and then the composite video signal CV is created and output by the encoder section.

The luminance signal Y which is the output signal of the image signal processing circuit 13 is supplied to the monochrome CRT 22 of the viewfinder 21 and the deflection circuit (not shown) of the monochrome CRT 22 through the terminal 15. This gives C
An image of the subject corresponding to the light L supplied to the image pickup processing circuit 12 of the camera-integrated VTR unit through the lens 11 is displayed on the screen 3 of the RT 22.

The composite video signal CV which is the output signal of the image signal processing circuit 13 is supplied to the internal VTR 33.

The internal VTR 33 has an internal VTR recording / warning circuit 34 surrounded by a dotted line block, and the internal VTR recording / warning circuit 34 is set to a low level during recording on a video tape cassette of the internal VTR 33. While the recording signal Sir is being output, a warning that the high level and the low level are repeated to warn that the remaining amount of the video tape cassette of the internal VTR 33 has become a certain value or less during recording on the tape cassette The signal Sia is output.

The recording signal Sir and the warning signal Sia are sent to the fixed input terminal 41c of the multiplexer 41, which is a switching device.
41d.

Further, the composite video signal CV which is the output signal of the image signal processing circuit 13 is supplied to the video signal output terminal 42.
Through an external VTR 43 constituting an external connection device section, or a video signal output terminal 42 and a camera adapter 44, and is connected to a camera control unit (hereinafter referred to as CCU) 45. A composite video signal for on-air is output from the output terminal 46 of the CCU 45.

When the camera adapter 44 is connected to the video signal output terminal 42, a V (vertical) reset signal generating circuit 47 of a block surrounded by a dotted line in the figure in the CCU 45 outputs a V (vertical cycle) reset signal, That is, V
The (vertical) sync signal VS is output, and the V sync signal VS is output.
C constitutes a camera-integrated VTR section through terminal 48
It is supplied to the CU connection detection circuit 49.

The CCU connection detection circuit 49 uses the V sync signal V
When S is supplied, the common output terminals 41a and 41b of the multiplexer 41 supply a control signal to the control terminal of the multiplexer 41 such that the common output terminals 41a and 41b are switched to the fixed input terminals 41c and 41f (in the position shown in the drawing).

External VTR recording of a block surrounded by a dotted line
The warning circuit / CCU call circuit 50 is a drawing in which an external VTR recording / warning circuit forming the external VTR 43 and a CCU call generating circuit forming the CCU 45 are commonly drawn. The external VTR 43 is connected to the video signal output terminal 42. In this case, the external VTR recording / warning circuit 50 is displayed, and the camera adapter 4 is connected to the video signal output terminal 42.
4, so when CCU 45 is connected, C
The CU call circuit 50 is shown.

Therefore, when the external VTR 43 is connected to the video signal output terminal 42, the external VTR recording / recording
The warning circuit 50 outputs a recording signal Ser that becomes a low level during recording to the video tape cassette of the external VTR 43, and the remaining amount of the video tape cassette of the external VTR 43 becomes a certain value or less during recording to the tape cassette. A warning signal Sea is output to repeat the high level and the low level to warn that the change has occurred.

When the camera adapter 44, and hence the CCU 45, is connected to the video signal output terminal 42, when the CCU call circuit 50 outputs the on-air composite video signal from the output terminal 46 of the CCU 45. The low-level CCU call signal Sc is output.

Recording signal Ser, warning signal Sea or C
The CU call signal Sc is supplied to the fixed input terminals 41e and 41f of the multiplexer 41 through the terminal 49.

One common output terminal 41a of the multiplexer 41 is a visible means arranged on the upper side of the screen 3 of the viewfinder 21 via the terminal 51.
It is connected to the cathode side of an upper tally lamp 61 composed of a light emitting diode. The other common output terminal 41b of the multiplexer 41 is a visible means arranged below the screen 3 of the viewfinder 21 via a terminal 52, and is, for example, a cathode of a lower tally lamp 62 composed of a light emitting diode. Connected to the side. The tally lamps 61 and 62 have a power source Vcc on the anode side.
It is connected to the. Therefore, the tally lamps 61, 6
2 illuminates when their carnode side goes low.

The viewfinder 2 constructed as above
The front structure of No. 1 is shown in FIG. As can be seen from FIG. 2, the viewfinder 21 has an eyecup 2 in front of it.
The upper tally lamp 61 and the lower tally lamp 62 are provided above and below the screen 3 of the CRT 22, respectively. Note that in the following description, it is noted that the upper tally lamp 61 is easier to visually recognize (easier to detect) than the lower tally lamp 62.

Next, the operation of the main part of the above embodiment will be described.

In this embodiment, three lamps, that is, the items (1) to (3) described below, are displayed by using the two lamps of the upper tally lamp 61 and the lower tally lamp.

Display of recording / warning information of the internal VTR 33 (hereinafter, simply referred to as information, if necessary). Display of recording / warning information of the external VTR 43 (hereinafter, simply referred to as information, if necessary). Display of call information when the camera adapter 44 (CCU 45) is connected (hereinafter, simply referred to as information, if necessary).

Here, the above three types of information display,
However, in terms of operating conditions (usage conditions),
As described with reference to FIG. 1, the video signal output terminal 4
Since only either the external VTR 43 or the CCU 45 is connected to 2, the information display is limited to information display or a combination of two types of information display.

In the combination of these two types, in the combination of information display, the priority of information display is made higher due to the frequency of use and the like. Therefore, in this case, the information display with the higher priority is associated with the upper tally lamp 61, and the information display with the lower priority is associated with the lower tally lamp 62. Further, also in the combination of the above table displays, the priority of information display is similarly made higher according to the frequency of use and the like. Therefore, in this case, the information display with the higher priority is associated with the upper tally lamp 61, and the lower information display is associated with the lower tally lamp 62.

After all, when the external VTR 43 is connected,
The information display to be displayed by the upper tally lamp 61 is the recording / warning display of the internal VTR 33 for information display. Further, when the CCU 45 is connected, the information display to be displayed by the upper tally lamp 61 is the call information display of the CCU 45 of the information display.

Therefore, referring to FIG. 1, the state in which the external VTR 43 is connected to the video signal output terminal 42, in other words, the state in which the CCU 45 is not connected will be described. The connection of the multiplexer 41 is as shown in the figure. That is, the internal VT of the internal VTR 33
Low level recording signal Si from the R recording / warning circuit 34
When r is output, the upper tally lamp 61 is continuously illuminated in red.

At this time, the recording signal Sir is changed to the warning signal S.
When changed to ia, the upper tally lamp 61 blinks.

Similarly, the lower tally lamp 62 is
By the recording signal Ser or the warning signal Sea supplied from the external VTR recording / warning circuit 50 of the external VTR 43,
It lights continuously or blinks.

Next, referring to FIG. 1, the state in which the CCU 45 is connected to the video signal output terminal 42 will be described. The V sync signal VS output from the V reset signal generation circuit 47 of the CCU 45 is supplied to the CCU connection detection circuit 49. To be done. Therefore, the CCU connection detection circuit 49
The connection of the CU 45 is detected, and the connection of the multiplexer 41 is switched to a state different from the illustrated state. Specifically, the common output terminal 41a and the fixed input terminal 41e are connected, and the common output terminal 41b and the fixed input terminal 41d are switched to a connected state. Therefore, the internal VTR
When the low-level recording signal Sir is output from the internal VTR recording / warning circuit 34 of 33, the lower tally lamp 62 continuously lights up (emits light) in red.

At this time, the recording signal Sir is the warning signal S.
When changing to ia, the lower tally lamp 62 blinks.

Similarly, the upper tally lamp 61 is
CC supplied from the CCU call circuit 50 of the CCU 45
The light is turned on according to the level of the U call signal Sc. This C
Since the CU call signal Sc becomes low level when the on-air composite video signal is output from the output terminal 46 of the CCU 45, at this time, the upper tally lamp 61.
Lights continuously.

As described above, according to the above-described embodiment, two tally lamps (upper tally lamp 61 and lower tally lamp 62) which emit red light in the upper and lower positions in the viewfinder 21 corresponding to a certain operating state. ) Is provided. Therefore, the upper tally lamp 61 and the lower tally lamp 6 are
Depending on the lighting state of 2 (including the blinking state), various operating states of the video camera, for example, during recording of the internal VTR 33 and the external VTR 43, a warning that the remaining tape amount is small, or C
The effect that the state such as on air through the CU 45 can be easily determined is obtained.

At this time, the contents of the upper tally lamp 61 and the lower tally lamp 62 can be changed. Therefore, for example, the type of the device connected to the video signal output terminal 42 is determined, and the information display of the internal VTR 33 is performed according to the priority of the operating state, in other words, when the CCU 45 having a higher priority is connected. Is automatically changed from the upper tally lamp 61 to the lower tally lamp 62, and the light emitting position can be changed.

FIG. 3 shows the configuration of another embodiment.
In the example of FIG. 3, the common output terminal 4 of the multiplexer 41 is
Insert the multiplexer 65 between 1a and the terminal 51,
A multiplexer 66 is provided between the common terminal 41b and the terminal 52.
I am trying to insert.

In the illustrated connection state of the multiplexers 65 and 66 of the example of FIG. 3, the same operation as that of the example of FIG. 1 is performed.
For example, when the common output terminal 66a and the fixed input terminal 66b of the multiplexer 66 are connected, the lower tally lamp 62 is connected in parallel to the upper tally lamp 61 and the same content is displayed. When the same content is displayed, the operation state determined by the tally lamps 61 and 62 is limited, but the tally lamp 6
The probability of missing the light emission of 1,62 is greatly reduced. In other words, the operating state can be reliably determined. In addition, even if one of the tally lamps or its drive circuit is in a non-lighted state due to a failure or the like, the operation state can be determined by the remaining tally lamps.

In this connection state (the common output terminal 66a of the multiplexer 66 is connected to the fixed input terminal 66b), the common output terminal 65a of the remaining multiplexer 65 is connected to the fixed input terminal 65c. In comparison with the connection state of FIG. 3, the meaning of the upper tally lamp 61, that is, the function and the function of the lower tally lamp 62 can be interchanged. In this case, change the display position arbitrarily according to the application,
The effect that the red tally can be changed to the priority position desired by the photographer or the like is obtained.

The tally lamps which emit red light are not limited to the vertical position but may be mounted in the horizontal position, or four tally lamps may be mounted in the vertical and horizontal positions. Two pieces may be attached to each of the upper and lower positions. In short, by attaching at least two pieces, it is possible to properly use them according to the intended use.

Further, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various configurations can be adopted without departing from the gist of the present invention.

[0054]

As described above, according to the present invention, at least two visible means for emitting red light at a predetermined position in the viewfinder corresponding to a predetermined operation state,
For example, a tally lamp is provided. Therefore, the effect that the various operating states of the video camera can be easily discriminated by the lighting state of at least two visible means is achieved.

Further, according to the present invention, the meanings of the at least two visible means can be mutually changed. Therefore, for example, the effect that the light emitting position can be changed according to the priority order of the operating states is achieved.

Further, according to the present invention, at least 2
The contents that each of the visible means mean are the same. For this reason, although the operating state determined by the visible means is limited, the effect of being able to significantly reduce the probability of missing the light emission of the visible means is achieved.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing a configuration of an embodiment of a video camera according to the present invention.

FIG. 2 is a schematic front view of a viewfinder as viewed from the screen side among the components in the example of FIG.

FIG. 3 is a circuit diagram showing a main part configuration of another embodiment.

FIG. 4 is a schematic front view of a viewfinder according to a conventional technique as viewed from the screen side.

[Explanation of symbols]

 21 viewfinder 33 internal VTR 41, 65, 66 multiplexer 43 external VTR 44 camera adapter 45 CCU 61 upper tally lamp 62 lower tally lamp

Claims (4)

[Claims] 1. A video camera provided with at least two visible means for emitting red light at a predetermined position in a viewfinder corresponding to a predetermined operating state. 2. The video camera according to claim 1, wherein the meanings of the at least two visual means can be changed. 3. The video camera according to claim 1, wherein the meanings of the at least two visible means are the same. 4. The video camera according to claim 1, wherein the at least two visible means are tally lamps.